Initial version of rattler python bindings

[baszalmstra]

This is the initial work of creating Python bindings for rattler.

The bindings are implemented using a double indirection approach that I learned from polars. Lets take Version as an example:

• Rust: PyVersion (wraps rattler_conda_types::Version and exposes it to python using PyO3)
• Python: Version (wraps the exposed PyVersion and exposes all functionalities with a pythonic API. Adds types and docstrings)

TODO:

• Set up better CI (lint, test, build).
• Set up linter (ruff)
• Determine the initial functionality and implement it. (I think matchspec and version)